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At that time, the most common way to do stereo enhancement was to decrease the L + R component of the stereo signal. [0] L+R/L-R was (and still is) a common way
by wgj 5y ago
At that time, the most common way to do stereo enhancement was to decrease the L + R component of the stereo signal. [0] L+R/L-R was (and still is) a common way to encode stereo signals, including for FM radio. [1]
The impact on the stereo field by just changing the mix of these two components is profound. No signal delay needed.
For signals that are simple L and R, sum them to get L+R and difference to get L-R. So you can use this technique on any stereo source.
[0] https://www.sweetwater.com/insync/stereo-enhancement-work-more-better/ https://www.sweetwater.com/insync/stereo-enhancement-work-mo...
[1] https://en.wikipedia.org/wiki/FM_broadcasting#Stereo_FM https://en.wikipedia.org/wiki/FM_broadcasting#Stereo_FM
- function_seven 5y agoI may be misremembering—I was a kid at the time—but I distinctly remember the "wow" effect only working if you were sitting in the driver's seat. To me that suggests that the signals were delayed to the nearer speakers to center the sound stage around the driver rather than some arbitrary point above the center console. But looking up photos online, I see the button I was talking about labeled as "Ambience", which kind of suggests the method you're describing. It also turns out that using the Internet to find technical info about a 40-year-old car that was never popular to begin with is very hard!